Crowbar; Rtc; Security Solution (Approtect); Smbus - Kontron COM Express COMe-bDV7 User Manual

9.8.1. Crowbar

Crowbar circuits are designed to meet the following criteria on each rail, when the shutdown signal is asserted:
 Voltage decays to 37% of initial value (equivalent to one RC time constant) within 400 µs
 Voltage decreases to below 1.5 V within 2 ms
It is customary that the design of carrier's crowbar on the 12 V and 5 V rails is based on similar criteria.

9.9. RTC

The Real Time Clock (RTC) keeps track of the current time accurately. The RTC's low power consumption means that
the RTC can be powered from an alternate source of power enabling the RTC to continue to keep time while the
primary source of power is off or unavailable.
A typical RTC voltage is 3 V with a current of less than 10 μA if the module is powered by the mains supply the RTC
voltage is generated by on-module regulators to reduce RTC current draw.

9.10. Security Solution (APPROTECT)

Kontron's Security Solution is a security chip for Kontron's security stack (APPROTECT). This combined hardware and
software solution is an embedded hardware security chip with software framework to provide full protection for your
application. The integrated security chip connected to USB2 port 3, supports the following features:
 Copy protection
 IP protection
 License model enforcement
If required, customers can customize the solution to meet specific needs. For more information, contact Kontron
Support.

9.11. SMBus

System Management Bus (SMBus) is a 2-wire serial interface used to connect several devices. The SMBus's low
bandwidth makes the SMBus ideal for power related signals with low data content. The SMBus supports fan sensors,
temperature sensors and voltage sensors.
9.12. SpeedStep® Technology
SpeedStep® technology enables you to adapt high performance computing to your applications by switching
automatically between maximum performance mode and battery-optimized mode, depending on the needs of the
application. When battery powered or running in idle mode, the processor drops to lower frequencies (by changing
the CPU ratios) and voltage, thus conserving battery life while maintaining a high level of performance. The frequency
is automatically set back to the high frequency, allowing you to customize performance.
In order to use the Intel® Enhanced SpeedStep® technology the operating system must support SpeedStep ®
technology.
By deactivating the SpeedStep® feature in the BIOS, manual control or modification of the CPU performance is
possible. Setup the CPU Performance State in the BIOS setup or use third party software to control the CPU
Performance States.
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COMe-bDV7 - User Guide, Rev 1.0
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